Henry c



(No Model.)

H. C. SBRGEANT.

DEVICE FOR OPERATING FEED 01" ROCK DRILLING AND OHANNELING MACHINES.

Patented Sept. 14, 1897 nfiiim'sl llgmumun ununumu MW 0 1|; uh a i i v I 1mm lg/enzom UNIT D STATES PATENT ()FFICE.

HENRY C. SERG-EANT, OF WESTFIELD, NE JERSEY, ASSIGNOR TO THE INGER-SOLLSERGEANT DRILL COMPANY, OF NEW YORK, N. Y.

DEVICE FOR OPERATING FEED 0F ROCK-DRILLING AND CHANNELING MACHINES.

SPECIFICATION forming part of Letters Patent No. 589,864, dated September 14, 1 897.

Application filed October 21,1896. Serial No. 609,513. (No model.)

To all when it may concern.-

Be it known that I, HENRY O. SERGEANT, of Westfield, in the county of Union and State of New Jersey, have invented a new and useful Improvement in Devices for Operating the Feed of Rock-Drilling and Channeling Machines, of which the following is a specification.

This invention is more especially designed for what are known as channeling machines, but is applicable to all machines for rock-drilling, quarrying, or channeling in which the feed for the depth of cut is effected by means of a screw which moves the drill-cylinder lengthwise within a guiding back or shell.

The object of the invention is to alford con venient and effective provision for applying power to the said screw for the purpose of raising or drawingback the cylinder andthe drill or hit stock'when it becomes necessary to change the drill or bits, which operation, when performed by hand, as is usual, is a very slow one, and, moreover, is very laborious, as not only has the weight of the cylinder, the piston, and the piston-rod to be lifted, but also the weight of the drill or bit stock and the drill or bits, which latter weight is often, especially in a channeling-machine, very considerable. To accomplish this object, I combine with the said screw, as hereinafter described, for the purpose of operating the same to lift or draw back the cylinder, piston-rod, stock, and drill or bits, a prime mover afiiXed to the drill-back and movable therewith in everydirection in which the drillback itself is capable of being moved.

In the accompanying drawings, Figure 1 represents a side view of the cylinder of a channeling or rook-d rilling machine, the shell in which said cylinder slides lengthwise for the purpose of feeding the bits, and the mechanism for moving the cylinder lengthwise which constitutes this invention, the shell being represented in section. Fig. 2 is a front view of the shell and of the mechanism above" mentioned. Fig. 3 is a plan view of the shell, the cylinder, and the aforesaid mechanism, part of which is shown in section. Fig. 4 is a horizontal sectional view corresponding with a portion of Fig. 3, but on a larger scale and showing the parts in different relation.

Similar letters of reference design ate corre sponding parts in all the figures.

A designates the drill-back or shel1,of which only a sufficient portion to illustrate my invention isrepresented, and which may be supported in an ysuitable manner to provide for the adjustment of the drill-cylinder B at such angles or inclinations as may be desirable, according to the work to be performed. The cylinder 13 is represented as fitted to 'slideways a a on the shell, in or on which it is capable of being moved lengthwise in the usual manner by means of the screw 0, which is arranged parallel with the cylinder alongside thereof and fitted to turn, but confined lengthwise in a bearing provided for it in the head of the shell, and the screw-thread of which works in a nut 19, which is affixed to the cylinder. On the head of this screw is the usual worm-gear c, which engages with an endless screw d on a shaft cl.

D is a bracket, which is secured by bolts e to the flange f on the back of the shell A. This bracket contains or has upon it the bearings g for the shaft 61 of the endless screw d, and it also has arranged upon it the small special or independent prime mover E for operating the said screw. This prime mover may be of any suitable kind, either a steam or corn pressed-air engine or an electric motor. It is represented as a three-cylinder steamengine of a well-known kind having its baseplate It bolted to the bracket D by bolts 2'. The shaft j of the said engine is represented as extended through bearings t in the yoke Z which is secured to the framing of the engine, and as carrying within the said yoke a spur-gear 7a, which gears with and drives an intermediate spur-gear Z, which turns loosely on a fixed stud we, carried by a small standard n on the bracket D, and this spur-gear Z gears with and drives the spur-gear 0, which is fast on the screw-shaft cl. The said shaft d is represented as having one end prolonged beyond one side of the shell A, as shown at (2* in Fig. 3, for the attachment of a handcrank for turning the screw cl by hand when it may not be desirable or convenient to use the engine.

In order to provide for disengaging the screw-shaft d from the engine when the screw d is to be worked by hand and for reengaging it for working by, power, the spur-gear 7c is made with a broader face than land 0 and the loose gear 1 is made capable of sliding lengthwise on the shaft to a position shown in Fig. 3, in which it gears with both In and 0 for working the screw (1 by power, or to a position in which it leaves 0 free for turning the screw-shaft by hand, as shown in Fig. 4:. To

secure the gear Z in either of the above positions, a spring-pressed locking-pin q is fitted to the outwardly-projecting hub of the said gear to enter one or other of two circumferential grooves r r in the stud m, the said pin having a conical or beveled point and the grooves r 7" being of corresponding form, so that the attendant by taking hold of a flange Z provided on the outer end of the hub may shift the gear from one to the other of the po sitions described, the pin q as he does so be ing allowed by the yielding of its spring to pass out of one groove and being caused by its spring to enter the other.

The prime mover employed in carrying out this invention when actuated bysteam or other motive pressure may have the said fluid supplied to it through a flexible pipe from any suitable generator or reservoir, or,

when actuated by electricity will be supplied through a flexible conductor.

The arrangement of the engine and the gearing through which it engages with. the

gear on the feed-screw all upon one bracket to be attached to the drill-back or part of the machine upon which the drill-cylinder moves lengthwise affords great facility for applying my invention to existing machines.

It is only for the purpose of illustrating my invention in a way which may becasily understood that I have represented the prime mover as arranged on the drill-back or shell of an ordinary machine. I should consider as the equivalent of the shell or drill-back any part of a channeling or drilling machine on which the drill-cylinder moves lengthwise, but which must move with the cylinder to set it and the drill or bits at difierent angles or inclinations.

What I claim as my invention is- 1. In a rock-drilling or channeling machine, the combination with the drill-cylinder, the drill-back to which said cylinder is fitted to move lengthwise but which'otherwise moves onlywith the cylinder, and a screw arranged parallel with the said cylinder for effecting said movement lengthwise, of a prime mover carried by the drill-back to move therewith in all directions and geared with the said screw for the purpose of applying thereto the power for raising or drawing back the cylinder, the drill or hit stock and the drill or bits, substantially as herein described.

2. The combination with the drill-cylinder, the drill-back on which the said cylinder moves lengthwise, a screw arranged parallel with thecylinder but confined lengthwise to the drill-back, a nut affixed to the cylinder and fitting said screw, and a shaft arranged upon the drill '-back and geared with said screw for operating it by hand, of a prime mover arranged on the drill-back and gears between the said prime mover and said shaft one of which gears is movable for disengaging the prime mover from said shaft to permit its use by hand, substantially as herein described.

HENRY C; SE RGEANT.

Witnesses:

FREDK. HAYNES,

LIDA M. EGBERT. 

